Wood-distilling apparatus.



No. 863,718. PATENTED AUG. 20, 1907. E. G'. JEWBTT. WOOD DISTILLINGAPPARATUS. APPLIOATION FILED MAY 24, 1906.

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PATENTED AUG. 20, 1907. E. G. JEWETT. WOOD DISTILLING APPARATUSAPPLICATION FILED MAY 24,1906.

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affoznu o No. 863,718. PATENTED AUG. 20, 1907.

E. G. JEWBTT WOOD DISTILLING APPARATUS. APPLICATION I'ILED MAY 24, 19064 8HEBTS-SHEET'3.

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EDMUND JEWETT, OF BELIJINGHAM, WASHINGTON.

WOOD-DISTILLING APPARATUS.

Specification of Letters Patent.

'- Patented Aug. 20, 1907.

Application file d May 24,1906. Serial No- 318,483.

To all whom it may concern: d I

Be it known that I, EDMUND G. J EWETT, a citizen of the United States,residing at Bellingham, in the county of Whatcom and State of-Washington, have invented certain new and useful Improvements in Wood-Distilling Apparatuses; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to the heat from the furnace.

With the above andother-objects-inview, the invention consists ofcertain novel features of construction, combina ion and arrangement ofparts, as will be hereinafter described and claimed. 7

In the accompanying drawings :Figure l is a vertical sectional viewthrough a furnace and retort constructed in accordance with theinvention; Fig. 2 is a similar view, taken at right angles to Fig. 1,and showinga wood holding crate arranged therein; Fig. 3 is a horizontalsectional view on the line 33 of Fig. 1; Fig. 4 is a side view of oneside of the wood holding crate removed from the retort; Fig. 5 is avertical sectional view, taken on a plane at right angles to Fig. 4;Fig. 6 is a horizontal sectional view of the crate taken above thegrated wood supporting partition arranged therein; and'Fig. '7 is anenlarged detail sectional view of the retort cover. Fig. 8 represents ahorizontal section taken on line 88 of Fig. 1. i p

Referring more particularly to the drawings, 1 denotes the furnace,whichis preferably rectangular in horizontal cross section andconstructed of masonry. The furnace 1 consists of an upper retortchamber 2, below which is formed apassage or compartment 3, saidcompartment 3 being separated from the chamber 2 by an arched ceiling 4,above which is arranged a bed of concrete 5. Arranged in the upperchamber 2 and resting on the concrete bed 5 is a retort 6, said retortbeing preferably rectangular in shape and formed of a series of sheetmetal plates, the joints of which are covered on their outer sides bystrips 7, to which the .meeting edges of the plates are bolted. Thelower end of the retort 6 is inclined from the sides of the retorttoward the center forming an inclined bottom where a discharge opening 8is formed, said opening communicating with adischarge pipe 9 saidinclined bottom 'or any suitable construction.

is preferably extended beyond the side walls of the retort and to theouter edge thereof is secured a fire screen 10, which is preferablyformed of .sheet metal and extends'entirely around the retort, as shown.This shield may be made in sections and connected by strips '7similar-to the strips 7 of the retort. Said fire screen is arranged asuitable distance fromthe outer sides of the retort to form a steamspace 12. Between the fire screen 10 and the inner side of the furnaceWall is formed a fire chamber orspace 13, in the lower portion of whichalong two sides of the furnace are arranged elongated gas burners 14,which may be of the usual In the spaces or chambers 13 above the gasburners 14 are arranged suitably supported baflie plates 15 by. means ofwhich all of the heat from the gas burners-is prevented from passingupwardly in the chambers or spaces above the gas pipe, some of said heatbeing deflected by said plates around the fire screen into the spaces atthe sides thereof in which there are no gas burners, therebyprovidingfor an even distribution of heat from said burners when passingupwardlyin the spaces between the screen and the inner sides of the furnacewall, as will be understood. The gas burners'l l are connected tosuitable supply pipes 16 arranged at one side of the furnace, said pipesbeing provided with a cutoffvalve 17 by which the iiow of gas to theburners is controlled.

At the lower end of the space 12 around the retort 6 is disposed aperforated steam discharge pipe 18,said discharge pipe being connectedwith a suitable supply pipe 19 arranged out side the furnace, as shown.The

steam discharged from the steam discharge pipe 18 passes upwardly in thespace between the retort and the fire screen and enters steam passagesor openings 20 formed in the side of the retort adjacent to its upperend. The steam in passing up the passages 12 will be superheated bycoming into contact with the hot fire screen,

' so that said steam enters the retort through the passages 2O heated toan extremely high temperature.

The upper open end of the retort 6 is adapted-to be closed by a cover21, said cover being preferably in the form of a hollow metal boxconstructed as clearly shown in Fig. 7 of the drawings, and to be filledor packed with asbestos. In the walls of the furnace adjacent to thespaces containing the gas burner are formed clean out openings 22',adapted to be closed by iron doors 23. In the upper portion of the sidewalls having the clean out openings are formed draft openings 24, inwhich are arranged thimbles having dampers 25, by means of which draftand ventilation of the furnace may be controlled.

In the lower end of the discharge pipe 9 is arrangeda funnel 26, bymeans of which the distillates passing through the discharge pipe 9 isdischarged into a suitable receptacle or conduit, not shown- Connectedto the pipe 9 above the funnel 26 is a gas conduit 27,which 1 extendsthrough the side of the compartment 3 and is closed at its outer endsbya plug 28. Connected to the .pipe 27 adjacent to the closed end areone or more upwardly projecting gas discharge pipes 29, by means ofwhich the gases from the retort are conducted to a suitable place ofdischarge.

Adapted to be placed in the retort 6 isa wood holding crate 30, which ishere shown as preferably constructed of angle iron strips and braces toform a rectangular receptacle somewhat smaller than the diameter of theretort, said crate beingadapted to be let down into the retort throughthe upper end of the same. I The crate when let down into the retort iscentered therein bymeans of inclined guide bars 3] arranged onthe innersides of the retort adjacent to each cornerthereof, as shown. Byproviding the guide bars 31- an equal space will be formed between eachside of the crate and the adjacent sides of the retort. Substantiallymidway between the -upper and lower ends of the'crate is arranged apartition 32. which separates said crate into two parts, in each ofwhich is adapted to be placed the wood to be treated, the pieces of Woodbeing stood on end on said partition and the bottom of the crate. bottomof the crate are preferably formed of a series of horizontally-disposedmetal bars 33, which are connected together by tie rods or bolts. Thebars-33 are spaced apart by sections of gas pipe forming sleeves 34,

through which and the bars 33, said tie rods are adapted.

to pass.

' Immediately series of inclined troughs 35, the edges of which overlapas shown in Fig. 5 of the drawings, said troughs being held'in positionby straps 36 bolted or otherwise fastened tothe cross bars of the crate,as shown in Fig. 4.

. opposite ends to a centrally-disposed ring to which is adapted to beconnected a hoistingcable by meansoi which the crate may be readilyplaced in or removed from the retort.

The bottom as well as the partition of the.crate 30 is composed of metalbars 33, connected by tie rods, and the crate being of skeleton or openform the wood may be placed in the lower compartment through theopenings in the crate' Byineans of anapp'aratus constructed as hereinshown and described such products as alcohol, tar, turpen-' tine andother distillates may be obtained from the,

The partition 32 and the below the partition 32 is arranged a' Havingthus described my invention, what I claim as new and desire to secure byLetters-Patent, is

1. In :1 wood distilling apparatus, a retort/means for closing saidretort, a wood holding crate adapted to heremovably disposed in saidretort, said crate comprising an .open frame having a transverselydisposed slatted partition, and troughs arranged below said partition."

2. In a wood distilling apparatus, a retort havingarranged near itsupper end a series of steam inlet passages, a cover to close saidretort, a wood holding crate arranged therein. steam discharge pipesarranged near the lower end of theretort and means whereby the steam ofsaid pipe is superheated before passing into the steam inlet 7 dischargepipe, andgns discharge pipes connected to said conduits, substantiallyas described.

4. In a wood distilling apparatus, .a furnace, a retort in said furnace,said retort having steam inlet openings near its upper ends, a firescreen arranged around said retort and spaced therefrom, :1 perforatedsteam discharge pipe arranged in the space between said fire screen andthe side of said retort, tbesteam from said pipe being adapted'to passupwardly through said space and to enter the retort through the inletopenings therein, said steam .being superheated by contact with saidfire screen, substantially as described. v,

5. In a wood distilling apparatus, a furnace, a retort arranged in saidfurnace, said retort having steam inlet pas sages near its upper end,1ifire screen arranged around saidretort and spaced therefrom, steamdischarge pipes arranged in the space between said retort and firescreen, gas burners arranged in the space between said fire 'screen andthe inner side of the furnace walls'along two' sides of the latter,baflle plates arranged above said burners to distribute the heat to thespaces between the other side of the furnace and the retort, and a woodholding crate arranged in said retort, substantially as,described.

,a retort'cbamber arranged above an open compartment 01 passage, :1 firescreen arranged in said upper chamber of.

the furnace and spaced from the inner .sidewalls thereof, a retortarranged within said fire screen andspaced'there from, said retorthaving formed near its upper end steam inlet passages, a removable coverarranged on said retort, perforated steam supply pipes arranged in thelower end of the space between said fire screen and retort, meanswhereby heat is generated in the spaces between two opposite sides of"the furnace. wall and said fire screen, bafiie plates arranged in saidspaces to direct the heat to the spaces in the other sides of thefurnace wall and fire screen, a discharge pipearranged in the inclinedbottom of said retort, a gas conduit connected to said discharge pipe, acrate adapted to be inserted in said retort, a slatted partitionarranged in said crate to separate the latter into upper and lower woodholding spaces, and means whereby the products of distillation aredischarged from the wood in said upper space onto the inclined bottom ofsaid retort, substantially as described.

7. In a wood distilling apparatus, a retort having a removable cover,means whereby steamis let into said closed retort, means to superhentsaid steam, a "wood holding crate adapted to be placed in said'retort,said crate comprising an open, rectangular frame, a slatted'partitionarrangedjn said frame to separate the crate into upper and lower woodhnlding'spaces, and troughs arranged below said partition, whereby theproducts of distillation from the wood in said upper space is dischargedonto the bottom of said retort, substantially as described.

8. In a wood distilling apparatus, a furnace, a fire o. In a wooddistilling apparatus, a furnace comprising screen arranged in saidfurnace, a retort arranged in said fire screen, means whereby steam isdischarged into said retort, means to super-heat said steam, an inclinedbottom formed in said retort, a discharge pipearranged in said bottom, awood holding crate adapted to be inserted into' said retort, means tocenter said crate within the retort, a slatted bottom and a slatted,partition, arranged in said crate, said partition separating thesame'into upper and lower wood holding spaces, a series of inclinedtroughs arranged below said partition, the edges of said troughs beingadapted to overlap, hoisting cables connected to the upper end of saidcrate, clean-out doors arranged in the walls of said furnace,ventilating thimbles arranged in the walls of and near the upper end ofthe latter, and draft dampers arranged in said thimbles, substantia11yas described. r

In testimony whereof I havehereunto set my hand in presence of twosubscribing witnesses.

EDMUND G. JEWETT; Witnesses:

' L. L. CROSBY,

HERBERT D. Connor.

